Re: hp ciss on freebsd - Mailing list pgsql-performance

From Vivek Khera
Subject Re: hp ciss on freebsd
Date
Msg-id 471D13B8-B63C-4059-9477-B1233A844F6C@kcilink.com
Whole thread Raw
In response to hp ciss on freebsd  ("Claus Guttesen" <kometen@gmail.com>)
List pgsql-performance
On Nov 5, 2007, at 8:19 AM, Claus Guttesen wrote:

> I will get four 72 GB sas-disks at 15K rpm. Reading the archives
> suggest raid 1+0 for optimal read/write performance, but with a solid
> raid-controller raid 5 will also perform very well when reading.

If you only have 4 drives, I'd recommend not to go with RAID5. You
want to max out spindles.  The 256k RAM may not be enough of a cache
too.


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